Allow negative literals in redundant_guards
This commit is contained in:
Alex Macleod
parent
2c3213f5c5
commit
b32d7c0631
@ -5,7 +5,7 @@
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use rustc_ast::{BorrowKind, LitKind};
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use rustc_errors::Applicability;
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use rustc_hir::def::{DefKind, Res};
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use rustc_hir::{Arm, BinOpKind, Expr, ExprKind, MatchSource, Node, Pat, PatKind};
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use rustc_hir::{Arm, BinOpKind, Expr, ExprKind, MatchSource, Node, Pat, PatKind, UnOp};
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use rustc_lint::LateContext;
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use rustc_span::symbol::Ident;
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use rustc_span::{Span, Symbol};
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@ -269,7 +269,11 @@ fn expr_can_be_pat(cx: &LateContext<'_>, expr: &Expr<'_>) -> bool {
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Res::Def(DefKind::Struct | DefKind::Enum | DefKind::Ctor(..), ..),
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)
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},
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ExprKind::AddrOf(..) | ExprKind::Array(..) | ExprKind::Tup(..) | ExprKind::Struct(..) => true,
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ExprKind::AddrOf(..)
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| ExprKind::Array(..)
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| ExprKind::Tup(..)
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| ExprKind::Struct(..)
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| ExprKind::Unary(UnOp::Neg, _) => true,
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ExprKind::Lit(lit) if !matches!(lit.node, LitKind::Float(..)) => true,
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_ => false,
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} {
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@ -117,6 +117,14 @@ fn h(v: Option<u32>) {
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};
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}
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fn negative_literal(i: i32) {
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match i {
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-1 => {},
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1 => {},
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_ => {},
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}
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}
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// Do not lint
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fn f(s: Option<std::ffi::OsString>) {
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@ -117,6 +117,14 @@ fn h(v: Option<u32>) {
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};
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}
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fn negative_literal(i: i32) {
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match i {
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i if i == -1 => {},
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i if i == 1 => {},
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_ => {},
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}
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}
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// Do not lint
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fn f(s: Option<std::ffi::OsString>) {
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@ -108,7 +108,31 @@ LL + Some(0) => ..,
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error: redundant guard
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--> $DIR/redundant_guards.rs:165:28
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--> $DIR/redundant_guards.rs:122:14
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LL | i if i == -1 => {},
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| ^^^^^^^
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help: try
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LL - i if i == -1 => {},
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LL + -1 => {},
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error: redundant guard
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--> $DIR/redundant_guards.rs:123:14
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LL | i if i == 1 => {},
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| ^^^^^^
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help: try
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LL - i if i == 1 => {},
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LL + 1 => {},
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error: redundant guard
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--> $DIR/redundant_guards.rs:173:28
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LL | Some(ref x) if x == &1 => {},
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| ^^^^^^^
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@ -120,7 +144,7 @@ LL + Some(1) => {},
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error: redundant guard
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--> $DIR/redundant_guards.rs:166:28
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--> $DIR/redundant_guards.rs:174:28
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LL | Some(ref x) if &1 == x => {},
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| ^^^^^^^
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@ -132,7 +156,7 @@ LL + Some(1) => {},
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error: redundant guard
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--> $DIR/redundant_guards.rs:167:28
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--> $DIR/redundant_guards.rs:175:28
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LL | Some(ref x) if let &2 = x => {},
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| ^^^^^^^^^^
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@ -144,7 +168,7 @@ LL + Some(2) => {},
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error: redundant guard
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--> $DIR/redundant_guards.rs:168:28
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--> $DIR/redundant_guards.rs:176:28
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LL | Some(ref x) if matches!(x, &3) => {},
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| ^^^^^^^^^^^^^^^
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@ -156,7 +180,7 @@ LL + Some(3) => {},
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error: redundant guard
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--> $DIR/redundant_guards.rs:188:32
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--> $DIR/redundant_guards.rs:196:32
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LL | B { ref c, .. } if c == &1 => {},
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| ^^^^^^^
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@ -168,7 +192,7 @@ LL + B { c: 1, .. } => {},
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error: redundant guard
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--> $DIR/redundant_guards.rs:189:32
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--> $DIR/redundant_guards.rs:197:32
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LL | B { ref c, .. } if &1 == c => {},
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| ^^^^^^^
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@ -180,7 +204,7 @@ LL + B { c: 1, .. } => {},
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error: redundant guard
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--> $DIR/redundant_guards.rs:190:32
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--> $DIR/redundant_guards.rs:198:32
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LL | B { ref c, .. } if let &1 = c => {},
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| ^^^^^^^^^^
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@ -192,7 +216,7 @@ LL + B { c: 1, .. } => {},
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error: redundant guard
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--> $DIR/redundant_guards.rs:191:32
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--> $DIR/redundant_guards.rs:199:32
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LL | B { ref c, .. } if matches!(c, &1) => {},
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| ^^^^^^^^^^^^^^^
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@ -204,7 +228,7 @@ LL + B { c: 1, .. } => {},
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error: redundant guard
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--> $DIR/redundant_guards.rs:201:26
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--> $DIR/redundant_guards.rs:209:26
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LL | Some(Some(x)) if x.is_empty() => {},
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| ^^^^^^^^^^^^
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@ -216,7 +240,7 @@ LL + Some(Some("")) => {},
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error: redundant guard
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--> $DIR/redundant_guards.rs:212:26
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--> $DIR/redundant_guards.rs:220:26
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LL | Some(Some(x)) if x.is_empty() => {},
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| ^^^^^^^^^^^^
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@ -228,7 +252,7 @@ LL + Some(Some([])) => {},
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error: redundant guard
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--> $DIR/redundant_guards.rs:217:26
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--> $DIR/redundant_guards.rs:225:26
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LL | Some(Some(x)) if x.is_empty() => {},
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| ^^^^^^^^^^^^
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@ -240,7 +264,7 @@ LL + Some(Some([])) => {},
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error: redundant guard
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--> $DIR/redundant_guards.rs:228:26
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--> $DIR/redundant_guards.rs:236:26
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LL | Some(Some(x)) if x.starts_with(&[]) => {},
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| ^^^^^^^^^^^^^^^^^^
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@ -252,7 +276,7 @@ LL + Some(Some([..])) => {},
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error: redundant guard
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--> $DIR/redundant_guards.rs:233:26
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--> $DIR/redundant_guards.rs:241:26
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LL | Some(Some(x)) if x.starts_with(&[1]) => {},
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| ^^^^^^^^^^^^^^^^^^^
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@ -264,7 +288,7 @@ LL + Some(Some([1, ..])) => {},
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error: redundant guard
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--> $DIR/redundant_guards.rs:238:26
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--> $DIR/redundant_guards.rs:246:26
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LL | Some(Some(x)) if x.starts_with(&[1, 2]) => {},
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| ^^^^^^^^^^^^^^^^^^^^^^
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@ -276,7 +300,7 @@ LL + Some(Some([1, 2, ..])) => {},
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error: redundant guard
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--> $DIR/redundant_guards.rs:243:26
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--> $DIR/redundant_guards.rs:251:26
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LL | Some(Some(x)) if x.ends_with(&[1, 2]) => {},
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| ^^^^^^^^^^^^^^^^^^^^
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@ -287,5 +311,5 @@ LL - Some(Some(x)) if x.ends_with(&[1, 2]) => {},
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LL + Some(Some([.., 1, 2])) => {},
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error: aborting due to 24 previous errors
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error: aborting due to 26 previous errors
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